Engine



Dec. 18, T1923. I HAYfifiS? .A. L. POWELL ENGINE Filed Dec. 10 1919 4 Sheets-Sheet l fl' W3.

A1. INVENTOR.

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1919 4 Sheets-Sheet 3 ENGINE A. L. POWELL Filed Dec.

A I I I l Dec. 18, 1923.

Dec. 18, 1923.

A. L. POWELL ENGINE 4 Sheets-Sheet 5 Filed Dec. 10 1919 Dec, 18, 1923.

A. L. POWELL.

ENGINE Filed Dec.

4 Sheets-Sheet 4v kflL, POW/6i Kill.

which veive is termed the inlet valve, end. 7

is ectuetecl by com (12) located on the crank sheit of the engine. The connection between the crank sheit and the valve (11) is through suitehie lint: mechanism illustmted e2; (13). The head of the cylinder if is also provicleci with em exheust pesse e (l t) which is controlled. by the rotatory vfive (l) operated through suit-ehle links from the cem shei'ft.

Arranged within the cylinder (2) there is e r'ecipi'oceting piston (it) end rigidly secured thereto is e piston rod {17), the lower end of which is provicled with 2;, cross heed indicated at Connected to the creek shaft through e slotted. aperture indiceted at (18) is e reciprocating member (19), between which member end the cross heed {18) is interpositioned e peculiar type of gee-bring which is specifically covereol in my copencling epplicetion Serial No. 3&3,- 95'l. it might be well to stete at this point thet the throw of the creel: ehe't't'is through e. shorter renge than the full movement of the piston head end. it is throughthese clifferent retios of movement that 1 mn eneblecl to increose the efficiency of the power stroke that Wili he ultimetely delivered to the creek shaft. This variance of movement is accomplished by the type of intevgeei'ing shown between the piston rod end the memher connected to the creole she'ft.

Avmngecl. Within the e'uxiiieiy cylinders (3) are compressioe pistons (20-420), the octoetiohs of which ere elvreys in opposition to movement of the Working piston. These compression pistons Willi, in their clesceot, time through siole passages {fi --21) e charge of gee from cevhmetors or any other coiiventioiml type of vepoviziog ele ment. pesseees eve controlled by check 01 other suite le valves indicetecl st (252). in OTQlfiII to eccomplish this opposing movement between the piston {16) end the compression pistons Ti provided the letter with ietchet stems (iii-23) which are adapted mesh with goers (Eh-524i) The type oi engine ilhistveterl in Ydi 3 is (16) arranged on the creek slightly modified from that shown in ig. l

in thet the connection between the piston heed end the event she'it is by it direct connecting rod {(5 35) which, et its lower end is ptoviclecl with elongated slot (26) through "which. the creek shaft is edepteci to ectuete. In this showing the piston rod is sioleioclzeoi so as to eev with fittijimfini segmentel gears which are joineelecl in any suitehle menses within the hose (1). The i'o'tio of movement between the piston {it} one. the compression pistons (fil -20) is suhsteotielly the some es that shown. in 1. the purpose of illus tetice We Will sev thet they ore geared it to it, thet is, the piston moves through e t emcee? stroke vvherees the compression pistons move only i. Also in this type, shown in Fig. 3, in piece of the rotatory valves shown in Fig. 1 is usecl s vecipvocetiog type of valve and; in order to prevent the precompressed charges Withiothe storage chemher from opening the valve (28bit provide at second valve (29), which second veive is arranged in opposition to that of (28). In order to operate this type of valve 1 provide a. clouhle operating velve mechanism shown in Fig. 3 by which the pivotellymounted arms {30-450) are ectueted in opposite (lirectioiis by elliptical member (31'), which in tum is operated through suitable links from the crank shaft oi? the engine upon which is wronged en opei'etieg cam. As shown in Fig. i there is else provided on exheust valve (32) which is likewise coin opereted from the creek shaft of the engine. The type as shown in Fig. 3 is one in which the throw of the creek shett equals the movement of the piston rod. 7

lie. the moclificetions shown in Figs. '7', 8, 3.6 end i the pelts eve siihstentielly es shown in Fig. 3, "with the exception oi the specific type oi": velve employeei. In the present instehce I employ e trenveisely slidiing veive (33} which is rovicieol with suitehle apertures so as to mitieli v admit the charge to the compression cyiinclevs, further admitting into the combustion chemher and ultimately eliovving the pessege of the eiiheust. These pesseges eve brought into pvoper registration with the various inlet enclbutlet passages by e voteteble com {34:}. This cam is ectuetefil from the crank sheit by any siiitehle mechanism, but es shown in present cese for illustration, by chain {35} emengecl evotmc't sprockets {3(5) and {SEl on the creek shaft enci com shefts iespectiveiy. ilinterposecl between the cam end one eml of the slitle velve (33) is e rocking link mecheiiism generally incliceteol es et (38) The opposite end of the slide voive 33) is tensioiieol by on expensihle spring (3% resting at one end e einst the velve cool its opposite end egemst e hrechet (4&0).

A complete operetioii of the device is es f0il0WS-A$Slllflliillg the pests to he in eye eitioii es shown in i, the compressed chevge thet has been deiiveved to the heed of the cylimlei" (2) is exploclei thereby forcing the piston (16) oiowiiwerci eml (i131)?- ing" seidl movement the compression cylincicirs 126) viii force the chevge of gas thet they heve drown in, up into the stovege chemhev {5). is held Within the chemioer until the pistoo (it) egein arrives et its upper iimit. During this o e-stroke of piston (iii), it vviil, of course, he omlerstooii thet the compression pistons eve moveii iiovvnvvemilv thevehv threw-veg iii :Eiesh chevge from the cevhw This prccompvesseci char *e Lavasev retor through the passages (22). While the piston (16) is at its highest point the inlet valve is momentarily opened thereby allowing a portion of the precompressed charve from the storage chamber to enter t e combustion chamber. During the up-stroke of the piston, the exhaust valve is held in its open position thoughout the entire lip-stroke and is closed just before the inlet valve is opened. The weight 17 shown in Fig. 13 maybe fastened to the piston rod toincrease the-efiiciency of the engine.

I claim- In an engine of the class described comprising a power cylinder and working piston therein, a rod connected to said piston and having a transversely slotted head, auxiliary cylinders, a compression piston arranged within each of said auxiliar cylinders, a rod connected to each of said compression pistons, each of said rods having a racked portion, a pinion in mesh with the racked portion and means acting within the slotted head of the working piston rod for driving the pinion and thereby the compression, pistons in opposite direction to that of the working piston and at a relatively different ratio of speed to that of said Working piston.

In testimony whereof I hereunto afiix my signature this th day of December, 1919.

ALVAH L. POWELL. 

